2-Chloro-1-(3,4-dichlorophenyl)ethanone

Also known as: 2,3',4'-Trichloroacetophenone, 3,4-Dichlorophenacyl chloride, Ethanone, 2-chloro-1-(3,4-dichlorophenyl)-

2-Chloro-1-(3,4-dichlorophenyl)ethanone (CAS 42981-08-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H5Cl3O and a molecular weight of 223.484 g/mol. Key properties include a melting point of 46-47°C, a boiling point of 335.4±32.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 141.5±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 42981-08-8
Jingsj CID: J-1992981-8
Molecular Formula: C₈H₅Cl₃O
Molecular Weight: 223.484 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	46-47°C
Boiling Point	335.4±32.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	141.5±25.7 °C
Exact Mass	221.940598
PSA	17.07000
LogP	3.25
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.565

Customs & Trade Information

HS Code	2914700090
Summary	HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Chloro-1-(3,4-dichlorophenyl)ethanone?

The CAS number of 2-Chloro-1-(3,4-dichlorophenyl)ethanone is 42981-08-8.

What are the molecular formula and molecular weight of 2-Chloro-1-(3,4-dichlorophenyl)ethanone?

2-Chloro-1-(3,4-dichlorophenyl)ethanone has molecular formula C8H5Cl3O and molecular weight 223.484 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2-Chloro-1-(3,4-dichlorophenyl)ethanone (CAS 42981-08-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992981-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.